186 EDIBLE EISHES OF NEW SOUTH WALES. 



Group III.— DUSSIJMIERIINA. 



Mouth, anterior and lateral : upper jaw not overlapping the lower : 

 abdomen neither keeled nor serrated : no osseous gular plate. 



Genus IV.— ETRUMEUS. 



Etrumeus, Bleeker, Verh. Bat. Gen. xxv. Japan, p. 48. 



Branchiostegals numerous : pseudobranchife well developed. Gill-mem- 

 branes entirely separated. Body elongate and subeylindrical : abdomen not 

 compressed or serrated. Snout pointed : supplementary bones of the 

 maxilla very narrow. Eyes with adipose lids. Jaws with small, fixed teeth, 

 which are not deciduous : patches of villiform teeth on the vomer present or 

 absent, on the palatine and pterygoid bones and on the tongue. Dorsal fin 

 situated entirely in advance of the ventrals : anal fin short. Pyloric 

 appendages in large numbers. 



Geographical distribution. — Seas of eastern Australia and Japan ; Atlantic 

 coasts of the United States. 



ETEUMEUS JACKSOIs^ENSIS. 



Etrumeus jaclcsoniensis, Macleay, Proc. Linn. Soc. N. S. Wales, iii. p. 36 

 pL iv. fig. 1, and iv. p. 382. 



Mar ay. 



B. XV. D. 19. A. 11. y. 10. P. 16. C. 17. 



Length of head 4'75, of caudal fin 6'40, height of body 6"75 in the total 

 length. Eye very large, entirely covered by adipose tissue, its length 2"75 

 in that of the head : snout compressed and moderately pointed, its length 

 1'50 in the diameter of the eye, and equal to the interorbital space. Kasal 

 openings inconspicuons, pierced at the opposite ends of a low, rounded, 

 skinny prominence. Upper surface of head very slightly convex, with a 

 median longitudinal ridge and lateral grooves, which latter joining on the 

 occiput Avhere the ridge disappears, form an acutely triangular space, the 

 sides of which are scalloped. Lower jaw very slightly projecting. Cleft of 

 mouth moderate, clupeiform, and a little oblique, the scimitar- shaped maxilla 

 just reaching beyond the anterior margin of the eye. Preopei'cle with four 

 branched poriferous tubes passing backwards, and downwards from the angle. 

 Teeth in the jaws in a single series ; those in the upper jaw exceedingly minute ; 

 on the sides of the lower jaw much larger, conical, and compressed : a ])yriform 

 patch on the vomer ; palatine bones and tongue rough. The distance between 

 the origin of the dorsal and the tip of the snout is I'lo in that between the same 

 point and the base of the caudal ; fifth dorsal ray the longest, 1"75 in the length 

 of the head ; outer edge of the fin emai'ginate ; its basal length longer than its 

 height : anal fin short and low, the last ray produced and equal in height to 

 the long anterior rays, leaving the outer margin deeply indented ; its basal 

 length 2"75 in that of the dorsal : ventrals small, equal in length to the 

 diameter of the eye ; they are inserted entirely behind the dorsal fin, the 

 distance between their origin and that of the anal being I^IS in that between 

 the same point and the origin of the dorsal, which latter distance is equal to the 



